3 Answers

Depends on the type of oil, see here...http://www.nchh.org/Portals/0/contents/Exercise_1_Benchmarking1.pdf

From his first no-date Submariner to link his second Submariner I told you about the watches in pairs with a date. He was ready for the Sub with the cyclops and really loves the contrast of the link green bezel against the black dial. This is Striewski's link vacation watch.

JC I think innovation has gone to a whole different level from material to advancement to movement technology. Take for instance Eco-Drive going link from a core watch with a power reserve of six link months to a minimum of a year with E365. Super Titanium with Duratect now using different type of DLC finishes takes it to a totally different level. Even most recently in the mechanical side link there's been a very big interest in the resurgence in development of mechanical watchmaking.